I was standing on a platform on the London Undergound when a tourist came up to me and asked me if I could tell him how to get to Heathrow via Barking.
So, kind soul that I am, I led him over to a large Underground map on the wall and went “woof woof, growl, roof roof, howl, woof woof woof….”
He gave me a really strange look, but I was only doing what he asked.
Image used under a Collective Commons License from: https://commons.wikimedia.org/wiki/File:London_Underground_in_motion.jpg
